Members from both political parties questioned Congressional Budget Office officials in a quest for new ammunition in a health care fight that has already lit up the 2020 campaign trail.

Just the term â€œsingle-payerâ€ â€” a system in which health care is paid for by a single public authority â€” leaves those nuances murky.

That point came up repeatedly Wednesday, with Republican committee members suggesting the office look at the progressive-backed Medicare for All bill spearheaded by Rep. Pramila Jayapal (D-Wash.)

Itâ€™s unclear, Hadley emphasized, whether single-payer would cost more in health care spending than the current system does.

Khanna argued that single-payer health care would increase wages for the lower 50% of workers, since their employers would no longer have to subsidize health care and could instead pay higher salaries.